Amusingly enough, while they do have a small list of HTML5 games, there is nothing in their documentation that talks about how to get one to them. The single reference is to using an iFrame to put their API onto your game that is hosted at another URL.

I am hopeful they, or Mochi, or someone like them will come along and provide a true HTML5 solution like the Flash folks already have. But I suspect we are getting rather off-topic here :-)